code: def test__lag__no_signal():
      # given
      container = MagicMock()
      async_lag_callback = MagicMock()
  
      # and
      queue = Queue()
  
      # and
      processor = SignalsProcessor(
          period=10,
          container=container,
          queue=queue,
          async_lag_threshold=1.0,
          async_no_progress_threshold=1.0,
          async_lag_callback=async_lag_callback,
          callbacks_interval=5,
          in_async=False,
      )
  
      # when
      processor.work()
  
      # then
      async_lag_callback.assert_not_called()
  
file_path: neptune-client/tests/unit/neptune/new/internal/signals_processing/test_signals_processor.py
imports: from queue import Queue
  from mock import MagicMock, call, patch
  from neptune.internal.signals_processing.signals_processor import SignalsProcessor
  from neptune.internal.signals_processing.utils import signal_batch_lag, signal_batch_processed, signal_batch_started
label_desc: Use image node_id 9 for calling a global function with example usage: test__lag__no_signal() without return types